This is a series of optical lenses that is available in different types for multiple options. Each optical lens offers first-rate durability and high clarity. This optical lens series is great to make high-end everyday glasses.
Plastic lenses: CR39: 1.56, 1.61, 1.67, 1.74.
Glass lenses: -1.523-PBX/PGX: 1.7, 1.8, 1.9.
Sun polarized lens: -CR39, polycarbonate, glass, polarized.